What category do astronomers use if a galaxy does not fit into the spiral or elliptical category?
A: Giant.
B: Funny.
C: Dwarf.
D: Irregular.
E: Primordial.
Ans: D: Irregular.
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The oldest parts of Earth's crust are located along the midocean rifts
Indicate whether the statement is true or false
Which does NOT belong to the same family?
A) infrasonic waves B) ultrasonic waves C) radio waves D) shock waves E) longitudinal waves
Take the lens maker equation and show that a lens which has been turned around (surface 1 becomes 2 and 2 becomes 1 ) has the same focal length
What will be an ideal response?
The magnetic force on a charged particle moving at a constant speed in a uniform magnetic field will be doubled when the angle between the velocity of the particle and the direction of the magnetic field changes from 25.0° to
a. 57.7°. b. 12.5°. c. 12.2°. d. 50.0°.